Wedges are ideal positioning shapes for exercise therapy. The positioning wedges can be used under the back, arm or leg of a patient to put her in a comfortable and functional position. They can be used to provide the necessary leverage to promote an exercise regime; i.e. under the knee to enable weighted ankle lifts. Skillbuilders weges can also be used as sleeping wedge pillows. The wedges have an integral waterproof polyurethane coating that can be washed. The heavy-duty wedges will give you years of use.